Schaefer's smallest over-the-headstay systems utilize Torlon bearing races, composite torque tube and two-piece snap together interlocking high-grade PVC extrusions. Long fiber reinforced injection molded components make SnapFurl CF 500 unique. Light weight, high strength and smooth operation makes SnapFurl ideal for trailerable boats. Installation is a Snap. Perfect for boats from 16' to 24'. Furling and reefing capabilities. Injection molded drum and torque tube for strength. Torlon(tm) ball bearing races. Fits 1/8" - 3/16" wire. Extrusion length - 31'. Interlocking, high grade Geon PVC extrusion. No headstay modifications.